This report documents the development and testing of a Surveillance and Delay Advisory System
(SDAS) for application in congested rural areas. SDAS included several techniques that could be used on rural highways to give travelers advance information on congestion on the road ahead of them. It is designed to address congestion problems at work zones or at approaches to major attractions. Important considerations for its design are reliability, level of maintenance, and cost. The SDAS employs three different data collection technologies to collect travel time information: weigh-in-motion, video, and radar subsystems. The system gathers data from a test zone, computes travel times, and transmits delay messages to motorists who are headed toward the zone. Important observations were made concerning all subsystems: some methods for detection and operation gave clearly superior results in either accuracy or reliability.
The purpose of this report is to document the historical development of the Travel Shenandoah pilot project, a real-time traffic, travel condition, an...
The User Needs and Technology Assessment Report is one in a series of interim documents for the Rural Applications of Advanced Traveler Information Sy...
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.